Remember Spiralfrog, the record industry-backed firm promising free ad-supported music downloads? It missed its mooted December 2006 launch, and subsequent infighting nearly scuppered the ship.

Now, users have been invited to test a beta version of the site, with a full launch planned by the end of the year.

But, with just 700,000 songs and an iPod-unfriendly structure, the Frog has a lot of catching up to do